Filtering-ivjachine



3 Sheets-Sheet 1.

J.A. GROGKER.. FILTE RING MACHINE.

(No Model.)

PatentedfDeo. 25, 1888.

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(No Model.) 3 SheetsSheet 2. J. A. GROGKER.

FILTERING MACHINE. I

No. 395,038. Patented Dec. 25 1888.

' INVENTOR WW2 55125. lamwzzz arwz iW W 'm/rzmwam 3 SheetsSheet 3.

J. AQOROGKER. FILTERING MACHINE.

(N0 Model.)

No. 395,038.. Patented Dec. 25, 188 8.

UNITED STATES PATENT: Orricn.

JAMES ALLEN CROCKER, OF BROOKLYN, NEV YORK, ASSIGNOR TO THE CROCKER FILTERING COMPANY, OF NEXV YORK.

FILTERING=MACHINE SPECIFICATION forming part of Letters Patent No. 395,038, dated December 25, 1888.

I Application filed July 10, 1888. Serial No. 279,590. (No model.) I

T0 at whom it may concern.-

Be it known that 1, JAMES ALLEN CROCKER, of Brooklyn, Kings county, State of New York, have invented certain Improvements in Filtering-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification, in which Figure l. is a side elevation of the receiving or inlet end of a filtering-machine constructed in accordance with my invention; Fig. 2, a side elevation of the delivery or outlet end of said machine. Fig. 3 is an end elevation of the inlet end of the same. Fig. 4 is an end elevation of the outlet end of the machine. Fig. 5 is a central transverse vertical section through the filtering chamber. Fig.6 is a transverse vertical section on the line 'v r of 1 Fig. 3; Fig. 7, a section on the line 10 w of Fig. P

at; Fig. 8, a section on the line a so of Fig. 6; Fig. 9, a section on the line y y of Fig. 7 Fig. '10, a section on the line .2 z of Fig. 6. Figs. 11 and 12 show the gearing by which the sleeves are rotated; 13, a section on the line 3 s of Fig. 4:.

My present invention relates to the filtration of large bodies of water for supplying cities for drinking and for manufacturing purposes, the particular class of filter herein referred to being a stationary or non-revolving machine, in which the bed of filtering maports in such manner that the water may be concentrated into a single pipe and the contiguous port-ion of the filter-bed, whereby a greater pressure may be successively directed upon different portions of the filter-bed and the filtering material be more forcibly agi tated and disintegrated and the exit of foreign matter more speedily and reliably insured,with the expenditure of less water than that required were the whole filter-bed acted on at once, the sleeves and pipes with their connecting-passages being so constructed and arranged as also to admit of the flow of the water through the entire mass of the filterbed at one operation to still further insure the thoroughness of the cleansing process.

Another feature of this invention is the combination, with the filtering-machine, of a H composed of any suitable and well-known i l i terial is cleansed by reversing the direction of the flow of the water- 1. c.,1he impurities are eliminated by causing the water to How from the outlet through the filter-bed and in the direction of the inlet end of the machine out through a waste-pipcin contradistinction to revolving the machine and inverting its filter-bed for this purpose; and my present invention has for its distinguishing feature a pair of sleeves provided with ports and located. at the outlet end of the machine, said sleeves being rotated either independent] y of, or simultaneously with, each other,in combination with a series of perforated pipes located within the filter-bed, some of said pipes being preferably above and other of said pipes below the plane passing through the axis of said sleeves, and provided with independent passages communicating with their which are less liable to get clogged.

i granular substance, the coarser granules be- 1 ing placed at the bottom and those of graded size prefeiably above, as thereby the finer particles of the filtrant are retained in the filter by the coarser, thus enabling me to use tubes with larger perforations at the bottom,

per segmental portion, 14, of the inlet end B of the cylinder is cast hollow, forming a tapering water passage or chamber, a, within which and integral with two of the sides of the chamber is located a receptacle, O, for containing alum or other suitable coagulant, the two other (opposite) sides, 15 16, of said receptacle being parallel to each other, and the first two sides, l7 l8, tapering downward and away from each other to conform to the taper of its integral sides of the chamber a.

i The remaining portion of the head at the inlet end of the cylinder consists in a wall, 19, of single thickness, and is stayed with radial ribs or braces. The bottom 13 of the coagulating-receptacle is perforated, and thereunder is a small chamber, 12, controlled by a valve, 0, said chamber communicating with The up-1 the inlet water-passagc a, when the valve is open.

Near the top of the coagulating-receptacle is an orifice, d, communicating with the large water-filtering chamber 6 directly over the filter-bed, this orifice (1 being controlled by a valve, f. \Yhen the two valves 0 f are open, a portion of the water flows from the supply into the chamber 1), and up through the co- 0 agulant, and thence out of the orifice (1 into and through the chamber c over the filterbed.

The coagulantis supplied to the receptacle C through an orifice, g, at its top, said orifice 5 being controlled by a valve, 7:. Dis a branch pipe leading from the inlet or supply pipe B, and serves to carry away the impurities while the filter-bed is being washed.

The construction of the head of the cylino der at the outlet end E will now be described. A segmental portion, 75, (below the axis,) is hollow, being formed with an inner wall, I, and an outer wall, at. A segmental portion, 21, (above the axis,) as also two other side 5 mental portions, 1) p, are each of single thickness, and are also strengthened by radial ribs or braces. Another portion, r, of the head (above the axis) is hollow, and is located below the segmental portion oz, and between it o and the two side segmental portions pp, said hollow head r constituting a water-chamber, a, formed by an outer wall, 8, and a portion of the inner wall, 7, which extends up from the lower hollow segment, 7a 5 G G are a series of horizontal perforated tubes extending between the inner wall, Z, and the upper portion of the wall 19, these pipes Gbeing located above the horizontal axis of the machine and a short distance under the line of the top of the filterbed. H II are another series of horizontal perforated tubes extending between the inner wall, I, and the lower portion of the wall 19, these pipes H being below the axis of the machine and a 5 short distance above the bottom of the filterbed. The ends of the pipes G, at the inlet end of the cylinder, are closed by covers 21, and the opposite ends of these pipes G, as

well as the corresponding ends of the pipes o H, (at the outlet end,) are supported by the wall Z of its head and open into the chamber a therein, being prevented from moving longitudinally by flat rings 9. The several pipes, G and H, are entered through openings in 5 the outer wall, m, of the hollow portion of the head at the outlet end of the cylinder, said openings being closed by covers I, bolted to the outer wall.

WVithin the hub I, at the outlet end of the o cylindeigare fitted apair of sleevesan inner one, K, and an outer one, Lcapable of being rotated either independently of each other or simultaneously together. The inner ends of both sleeves are cast closed. and the inner end 5 of the hub is closed by a cover, 22. The outer ends of these sleeves are open and project through the outer wall, 772, of the hollow head thereto below the slee\ and beyond the hub and connect:- with the delivery-pipe E, each sleeve terminating in a. flange, 23, provided with gearing 2a, actuated by a worm-gear, M, hercinait'terto be described, by which the independent rotation of the sleeves is effected. The inner sleeve, K, is provided with a single slot or port, 25,013' a length equal to that of the portion of the water-chamber contiguous thereto and of a width on its periphery equal to the transverse distance between the sides of the water-chamher a. (See Fig. 9.) The outer sleeve, L, has two slots or ports, a wide one, 20, of a size to exactly register with the port of the inner sleeve, and a narrower port, 27, of the same length as each of the other ports, but of a width only equal to that of the inlet end of each of several distinct water-passages, 28 29 3O 31, formed by division-plates 32, located in the water-chamber a above the sleeves, each of these water-passages communicatii'lg only with the open end of its individual perforated pipe G. The portion of the water-cliamber (1 below the sleeves is also divided by partitions, so as to form distinct passages 33 3t 35, leading only to their re spective pipes H. The width of each of the large ports 25 20 corresponds exactly to the inlet end of the water-chainher, contiguous sthat is to say, corresponds peripherally with the distance between the points 36and the size of the small port 27 ot' the outer sleeve corresponds with the size of the outlet end of each waterpassage 28 29 302-31 leading to the upper series of tubes.

Iwill now describe the mechanism by which the two sleeves maybe either o ;)erated independently of each other or both together.

To the outer end of each sleeve K 1) (provided with a flange, 23) is bolted a ring-gearing, 24, having the teeth omitted at one portion, c, of its periphery. In the ring of the gear oli' one of the sleevesfor instance, the outer sleeve, L-is formed a segmental channel, or groove, 71 and1n'ojectingfrom thecontiguous surface of the ring of the gear ot the other sleevefor instance, the inner sleeve, Kis a pin, 1", whose path lies within the channel h.

The gearing of both sleeves is operated by the single worm M, the shaitot' which maybe turned by hand or otherwise. 'While the worm engages with the teeth of the gear of the sleeve K and rotates the same, the worm does not engage with the teeth of the gear ol the other sleeve, l as the toothless portion 0 of the latter is .not in line therewith; but when the pin i, of the gear of the sleeve K has moved to the end of the groove 71. its contact therewith causes the worm to engage with the toothed portion of the gear of the other sleeve, and both sleeves rotate simultaneously until the toothless portion 6 of the inner sleeve is brought in line with the worm, when said sleeve stops rotating and the outer sleeve continues to rotate until. the pin. t and the segmental groove h arrive at their original relative position they occupied as at the commencement of the rotation.

From the foregoing construction of the water-passages, the sleeves with their ports, and rotating mechanism it will be understood that the ports of the sleeves are made to register with the inlet ends of the water-passages leading to the perforated pipes G H, as desired, either opening separately and in succession any one of the upper or any one ofthe lower passages while the other passages are closed, and by thus conducting the water through separate portions instead of passing the same volume of water directly through the entire bed of filtering material at one oporation the pressure is increased and the bed more thoroughly agitated and broken up, which facilitates the expulsion of the impurities in the water. During the process of filtration the water enters the cylinder at the inlet or supply end B, the branch D or wastepipe being closed by a valve, (not shown then the water flows in the direction of the arrow 37 into the water-chamber a, and if the valves 0 f are open a portion of the water passes into the small chamber 1) and thence up through the perforations in the bottom of the coagulating-receptacle C and out of the orifice din its top into the chamber 6 over the filter-bed, down through the filtrant, and out through the lower series of perforated pipes H, into and through the lower portion of the waterchamber a in the hollow portion '1' of the head at the outlet end E, and through the large ports 25 26 in the sleeves to the system of service pipes. During the process of cleansing the filter-bed the inlet end, B, is closed, the branch or waste pipe D opened, and the direction of the flow of the water through the filter reversed by allowing the water to enter the outlet end E through the sleeves K L, the port 25 of the inner sleeve being rotated, so as to close communication with the passages leading to the lower series of pipes, H, and open the passage leading to the first perforated pipe of the upper series, G, and after the contiguous portion of the filter-bed is cleansed closing this passage and opening another passage. The water being thus concentrated and allowed to act upon different sections of the filter-bed separately they are more violently agitated and the sediment more thoroughly loosened and expelled, after which, by rotating the sleeves still farther in the same direction, (see arrow 40, Fig. 9,) the passages 28 29 3O 31 leading to the upper series of pipes G, are all closed, and the passages 33 34 35 to the bottom series of pipes H opened separately in succession, after which all of the passages leading to the lower series, H, are opened by the continued rotation of the outer sleeve, when the water is free to pass through all of the lower passages and up through the entire filter-bed at once and through the inlet water-chamber, 0, out through the waste-pipe D, this last operation being effectual in removing the small percentage of impurities remaining. The sleeves and valves are provided with stuffingboxes of well-known construction.

I claim- 1. A filtering-machine having hollow heads formed at its inlet and outlet ends, a pair of sleeves, K L, provided with ports and projecting into and adapted to be rotated within its outlet-head, a series of perforated pipes, GH, extending between said heads, and a series of independent water-passages formed in the outlet-head, whereby said passages may be opened separately in succession, one passage only being left open while the others remain closed, or more than one left open at the same time, as and for the purpose described.

2. The sleeves K L, with their ports 25 26 27, and gearing 24, having a portion of the teeth of each gear emitted, a segmental groove, h, in one gear, and a pin, 1'', projecting from the other gear adapted to enter'the groove, in combination with an actuating toothed gear which rotates each sleeve independently of the other or both together, as and for the purpose set forth.

3. In a filtering-machine having hollow heads at its inlet and outlet ends, a waterchamber, a, formed in the outlet-head, a series of-division-plates, 32, forming separate and independent water-passages 28 29 3O 31 33 34 35 within said chamber a, in combination, and communicating with perforated pipes G H, located in the filtering-chamber and extending between the inlet and outlet heads, substantially as specified.

4. In combination with a filter having a hollow inlet-head and a filter-chamber provided with perforated pipes G H, the coagulating-receptacle C, located within said head, as and for the purpose set forth. 8

5. In combination with the water-passage in the hollow inlet-head of the filter, a coagulating-receptacle, (3, formed integral with the sides thereof, and provided with a perforated bottom, 1-3, the chamber 1) thereunder, the exit and replenishing orifices d g, and the valves 0 f h, for controlling the same, as set forth.

Vitness my hand this 7th day of June, 1888.

JAMES ALLEN CROCKER. 

